prototype: Use Object.isElement
prototype: Use Object.isElement

leafo/prototype,jgornick/fusejs,fashionsun/prototype,lamsieuquay/prototype,jgornick/fusejs,erpframework/prototype,GunioRobot/fusejs,kangax/prototype,292388900/prototype,ridixcr/prototype,ridixcr/prototype,mc0/fusejs,lamsieuquay/prototype,sdumitriu/prototype,ldf7801528/prototype,292388900/prototype,Gargaj/prototype,kensnyder/fusejs,madrobby/prototype,ridixcr/prototype,GunioRobot/fusejs,loduis/prototype,ldf7801528/prototype,Jiasm/prototype,erpframework/prototype,lamsieuquay/prototype,Gargaj/prototype,sdumitriu/prototype,ldf7801528/prototype,ShefronYudy/prototype,292388900/prototype,kensnyder/fusejs,ShefronYudy/prototype,fashionsun/prototype,Jiasm/prototype,Jiasm/prototype,loduis/prototype,ShefronYudy/prototype,erpframework/prototype,fashionsun/prototype,mc0/fusejs,sstephenson/prototype,sstephenson/prototype,loduis/prototype,baiyanghese/prototype,baiyanghese/prototype,leafo/prototype,kangax/prototype,savetheclocktower/prototype,sstephenson/prototype,sdumitriu/prototype,Gargaj/prototype,savetheclocktower/prototype,madrobby/prototype